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    Switched ISP, PPPoE to DHCP

    Scheduled Pinned Locked Moved General pfSense Questions
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    • F022YF
      F022Y @stephenw10
      last edited by

      @stephenw10 Thanks for the reply, I thought i removed all the references to the PPPoE stuff. I have a new box turning up in the next few days to migrate my VMs to (including the PFSense VM) I may just rebuild the router and see if that fixes everything.

      1 Reply Last reply Reply Quote 0
      • F022YF
        F022Y
        last edited by

        So doing some playing I notice the following the IP i get from a "what is my IP" lookup and what appears in the addresses on the interface are different.

        For example:- what is my ip = 188.74.x.x
        WAN interface on pfsense = 100.64.x.x

        My no-ip dynamic ip points at the 188 address so i'm guessing this is why the port forwarding is borked? I did some testing with a friend by opening ICMP to just his public IP and doing packet captures all i could see where 100.x addresses. Is this a case of chatting to my ISP?

        N stephenw10S 2 Replies Last reply Reply Quote 0
        • N
          netblues @F022Y
          last edited by

          @f022y You are behind carried grade nat.
          This is where 100.x is used for.
          Unless your new isp can switch you to "public" ip, nothing related to port forward will ever work.

          F022YF 1 Reply Last reply Reply Quote 1
          • F022YF
            F022Y @netblues
            last edited by

            @netblues Thank you for the reply, i had a horrible feeling that would be the case.

            J 1 Reply Last reply Reply Quote 0
            • J
              Jarhead @F022Y
              last edited by

              @f022y CGNAT only applies to IPv4, see if they can get you on an IPv6 address.
              Doubtful, but worth a try.

              N 1 Reply Last reply Reply Quote 0
              • N
                netblues @Jarhead
                last edited by

                @jarhead one can get a tunneled ipv6 from hurricane, but the whole point is most probably irrelevant to the op.

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                • J
                  Jarhead @netblues
                  last edited by

                  @netblues said in Switched ISP, PPPoE to DHCP:

                  @jarhead one can get a tunneled ipv6 from hurricane, but the whole point is most probably irrelevant to the op.

                  No, what I meant was from his ISP. If they have IPv6 capabilities he wouldn't be behind the CGNAT.
                  Problem is, not many ISP's offer v6 yet.

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                  • stephenw10S
                    stephenw10 Netgate Administrator @F022Y
                    last edited by

                    @f022y said in Switched ISP, PPPoE to DHCP:

                    WAN interface on pfsense = 100.64.x.x

                    Yup, CGN. That will prevent any port forwards working. So likely the firewall rules are actually fine.

                    Steve

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                    • F022YF
                      F022Y
                      last edited by

                      So got an email today from their support to confirm CGNat is used but i can buy a static IP for a monthly fee I see on their website they support IPv6 so asking about that.

                      N 1 Reply Last reply Reply Quote 0
                      • N
                        netblues @F022Y
                        last edited by

                        @f022y Getting a static ipv4 is your only viable option
                        Life with ipv6 only needs also some kind of nat upstream, if you are to be connected to the Internet as we know it.

                        Sad but true :)

                        F022YF 1 Reply Last reply Reply Quote 0
                        • F022YF
                          F022Y @netblues
                          last edited by

                          @netblues bugger. Annoyingly since discovering CGNat (i'll be honest never came across it in the UK must have been lucky) this explains a few things.

                          Since switching i've had strict NAT on my PS5 which i've not been able to work out, previously I would look at port forwarding to fix but obviously i now know why that didn't work.

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                          • F022YF
                            F022Y
                            last edited by

                            So after a chat with my ISP they offered me a free public IP, all my rules work again!!

                            Thank you all for the help i'd never come across CGNat before. The more you know.

                            1 Reply Last reply Reply Quote 1
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